@charset "UTF-8";

body {
    margin: 0;
    padding: 0;
    font-family: Times, TimesNR, 'New Century Schoolbook',
    Georgia, 'New York', serif;
    background-color: rgb(230, 229, 235);
}

.header {
    width: 100%;
    height: 50px;
}

.navigation {
    background-color: #766713c9;
    width: 225px;
    height: 800px;
    display: block;
    position: absolute;
    left: 0px;
}

.body {
    display: block;
    width: 1256px;
    height: 800px;
    position: absolute;
    left: 225px;
}

.main {
    background-color: rgb(233, 224, 167);
    width: 900px;
    height: 600px;
    position: relative;
    top: 50px;
    left: 90px;
}

h2 {
    margin-left: 20px;
}

ul {
    padding: 0;
    display: block;
    font-size: 20px;
    color: ghostwhite;
}

li {
    padding-top: 10px;
    width: 150px;
    text-align: center;
    height: 35px;
    background-color: rgb(18, 60, 96);
    border: rgb(180, 182, 27) solid 1px;
    cursor: pointer;
    margin-top: 5px;
}

.choice {
    padding-top: 10px;
    width: 240px;
    text-align: center;
    height: 35px;
    background-color: rgb(18, 60, 96);
    border: rgb(180, 182, 27) solid 1px;
    cursor: pointer;
    margin-top: 5px;
    font-size: 25px;
}

.choice .youjian {
    display: none;
}

.choice .zuojian {
    display: block;
}

li:hover {
    font-size: 25px;
    width: 240px;
    transition: 0.5s;
}

li:hover .youjian {
    display: none;
}

li:hover .zuojian {
    display: block;
}

.youjian {
    display: block;
    float: right;
    height: 10px;
    width: 10px;
    border-width: 4px 4px 0 0;
    border-color: rgb(203, 206, 37);
    border-style: solid;
    transform: rotate(45deg);
    margin-right: 5px;
    margin-top: 5px;
}

.zuojian {
    display: none;
    float: right;
    height: 12px;
    width: 12px;
    border-width: 4px 4px 0 0;
    border-color: rgb(203, 206, 37);
    border-style: solid;
    transform: rotate(225deg);
    margin-right: 5px;
    margin-top: 5px;
}

a {
    display: block;
    position: absolute;
    top: 20px;
    right: 50px;
    color: rgb(132, 123, 40);
    font-size: 18px;
}